Hey Mr. Chow! I just wanted to make a quick correction: most AC units actually use a heat exchanger in the outdoor condensing unit to cool off the hot air that flows into it (just the exact opposite of the furnace's heat exchanger, except that the hot metal is replaced by an air pipe), which means that no outside air is ever pumped into your home; all the air in your HVAC system generally is just the recirculated air from your home.
Hey Mr. Chow! I just wanted to make a quick correction: most AC units actually use a heat exchanger in the outdoor condensing unit to cool off the hot air that flows into it (just the exact opposite of the furnace's heat exchanger, except that the hot metal is replaced by an air pipe), which means that no outside air is ever pumped into your home; all the air in your HVAC system generally is just the recirculated air from your home.
Thanks for your input / knowledge Swaroop!! I appreciate you!